Citation: Xiao Fei MA, Jiu Gao YU, Jin FENG. A Mixed Plasticizer for the Preparation of Thermoplastic Starch[J]. Chinese Chemical Letters, ;2004, 15(6): 741-744. shu

A Mixed Plasticizer for the Preparation of Thermoplastic Starch

School of Science, Tianjin University, Tianjin 300072

Received Date: 13 May 2003

In this paper, formamide was firstly used as plasticizer to prepare thermoplastic starch (TPS), which could suppress the retrogradation of TPS by X-ray diffractometry (XRD) and show a good flexibility, but was weaker than conventional glycerol-plasticized TPS (GPTPS). When urea was introduced into plasticizer, both the retrogradation and mechanical properties were ameliorated. The tensile stress, strain and energy break of TPS plasticized by urea (wt. 20%) and formamide (wt.10%), respectively, reached 4.83 MPa, 104.6% and 2.17 N·m (Newton?meter) after it had been stored at relative humidity (RH) 30% for one week.
- Thermoplastic starch,
- formamide,
- urea,
- retrogradation
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